Mustela vison

Also known as North American Mink

American minks patrol stream banks, marshes, and coastlines with lithe agility, diving expertly after fish and crayfish or stalking small mammals along the shore. These solitary semi-aquatic hunters mark long territories with pungent scent secretions and construct burrows among root systems and riverbanks. While native across North America, feral populations established from fur farm escapes now thrive globally, impacting native wetland fauna.